Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
Recently a 9-months-old purebred Chester White boar was brought to Iowa State College for slaughter. The genitourinary tract from the ureters posteriorly was retained for examination by personnel at Stange Memorial Clinic.
Terry, J. R.
"Pseudohermaphroditism in a Boar,"
Iowa State University Veterinarian: Vol. 13
, Article 17.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol13/iss2/17